Kroeger, Hermann German-American aviation engineer during WW2. Recruited by von Braun and moved to the US, becoming Deputy Director, Guidance and Control Division, Huntsville.

German aviation engineer during World War II. As of January 1947, living at Brodten bei Travemuende. Later recruited by the Von Braun team to move to the United States. As of 1960, Deputy Director, Guidance and Control Division, NASA Marshall Space Flight Center.